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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.2 mag, 163 km SSE of Isangel, Vanuatu


Earthquake location -20.7731S, 170.1451WA light earthquake with magnitude 4.2 (ml/mb) was reported 163 km SSE of Isangel, Vanuatu (101 miles) on Tuesday. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). All ids that are associated to the event: us7000qvqs. Unique identifier: us7000qvqs. The 4.2-magnitude earthquake has occurred at 21:40:05 / 9:40 pm (local time epicenter). The epicenter of the earthquake was roughly 148.283 km (92 miles) below the earth’s surface. Exact location of earthquake, longitude 170.1451 East, latitude -20.7731 South, depth = 148.283 km. Global time and date of event 19/08/25 / 2025-08-19 21:40:05 / August 19, 2025 @ 9:40 pm UTC/GMT.

In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days three and in the last 365 days twenty-six earthquakes of magnitude 3.0 or greater that have been detected nearby. Each year there are an estimated 13,000 light earthquakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 163 km SSE of Isangel, Vanuatu.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 170.1451° East Decimal degrees longitude. Negative values for western longitudes.
Latitude -20.7731° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 148.283 km Depth of the event in kilometers.
Place 163 km SSE of Isangel, Vanuatu Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-08-19 21:40:05 Time when the event occurred. UTC/GMT
Updated 2025-09-14 23:12:24 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt The total number of felt reports
CDI The maximum reported intensity for the event.
MMI The maximum estimated instrumental intensity for the event.
Alert Level The alert level from the PAGER earthquake impact scale. Green, Yellow, Orange or Red.
Review Status reviewed Indicates whether the event has been reviewed by a human.
Tsunami 0 This flag is set to "1" for large events in oceanic regions and "0" otherwise. The existence or value of this flag does not indicate if a tsunami actually did or will exist.
SIG 271 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,us, A comma-separated list of network contributors.
Number of Stations Used 21 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 3.106 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.52 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 145 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us7000qvqs Id of event.
Event Code 7000qvqs An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000qvqs, A comma-separated list of event ids that are associated to an event.

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